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Paulo Pires
November 30, 2017
Programming
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GraphQL 101
Paulo Pires
November 30, 2017
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Transcript
GraphQL 101 @caofrade
Objetivo
GraphQL Novo padrão para APIs Linguagem de Query (consulta) Open-source
mantido pela galera do Facebook
Quem usa?
MUITO, MAS MUITO CONTEUDO
HYPE? Que problema o GraphQL resolve mesmo?
REST
REST •Representational State Transfer •Arquitetura baseada em recursos: - Entidades
do sistema - Identificados por URIs - Manipulado por representações (JSON, XML, HTML)
None
None
Problemas •Overfetching - Download de dados desnecessários. •Underfetching - Acessar
mais de 1 endpoint para juntar os dados necessários.
GraphQL
Conceitos
Schema •Recursos são definidos por um sistema de tipos •Contrato
entre cliente e servidor sobre como a aplicação pode acessar os dados. •Schema Definition Language (SDL)
None
Query •No REST, múltiplos endpoints retornam estruturas de dados fixas.
•Em GraphQL, existe um único endpoint, onde o cliente determina qual dado é necessário.
None
None
None
None
Mutation •Responsável por criar e mudar dados armazenados no back-end.
None
None
Schema •Query e Mutation também precisam ser definidos no Schema
•São os pontos de entrada para as requisições enviadas pelo cliente.
None
Como Usar?
facebook.github.io/relay
apollographql.com/client
GraphQL não é magica!
E não vai matar o REST!
Obrigado @caofrade